Most of us see sleep as a passive time period: The body rests, energy is collected. But the truth is much more fascinating! Sleep is one...

Historical Development From the beginning of the 19th century, scientists began to work on classifying elements and understanding their...

While desertification is rapidly increasing worldwide due to global climate change, especially in the African continent, this situation...

The definition of planet has changed several times in the history of astronomy, with the most recent definition being made by the...

We are all stardust (Carl Sagan), but our elemental structure is neither similar to stars, nor the Earth, nor the atmosphere. Life on our...

Orbital (Axis) inclination is a term that indicates how much the orbit of a planet or other celestial body is inclined with respect to...

Retro literally means “going back”. Mercury retrograde is defined as Mercury turning backwards, going backwards. Named after the Roman...

You are outside in freezing weather when it is snowing or you are a mountain climber climbing the Himalayas, you are very cold but have...